Finding the Fourth Proportional to 55,640.72, 82,964.76 and 49,458.80

Step by Step Solution

1. Step 1: Write the proportion equation
   55,640.72 : 82,964.76 = 49,458.80 : x
2. Step 2: Convert to fraction form
   55,640.72/82,964.76 = 49,458.80/x
3. Step 3: Cross multiply
   55,640.72x = 82,964.76 × 49,458.80
4. Step 4: Simplify right side
   55,640.72x = 4,103,337,471.89
5. Step 5: Solve for x
   x = 4,103,337,471.89/55,640.72
6. Step 6: Final answer
   x = 73,747.02